JP2008149155A - Stent device - Google Patents
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- JP2008149155A JP2008149155A JP2008004828A JP2008004828A JP2008149155A JP 2008149155 A JP2008149155 A JP 2008149155A JP 2008004828 A JP2008004828 A JP 2008004828A JP 2008004828 A JP2008004828 A JP 2008004828A JP 2008149155 A JP2008149155 A JP 2008149155A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2/06—Blood vessels
- A61F2/07—Stent-grafts
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/89—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure the wire-like elements comprising two or more adjacent rings flexibly connected by separate members
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2/06—Blood vessels
- A61F2002/065—Y-shaped blood vessels
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2/06—Blood vessels
- A61F2/07—Stent-grafts
- A61F2002/075—Stent-grafts the stent being loosely attached to the graft material, e.g. by stitching
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2002/825—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents having longitudinal struts
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Public Health (AREA)
- Transplantation (AREA)
- Cardiology (AREA)
- Veterinary Medicine (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Gastroenterology & Hepatology (AREA)
- Pulmonology (AREA)
- Prostheses (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
Description
技術分野
本発明は、長手方向に延び、且つ連絡部材により相互連結された複数本の長手方向に連続する円筒形ばね部材を備える少なくとも一つの筒状部材を具備するステントデバイスにかかり、該個々の円筒形部材は、肘区分間に延びる腕区分を有するジグザグ配置のエンドレスワイヤであり、該筒状部材は、比較的小さな径の半径方向の圧縮状態から大きな径の状態に自己拡張できるものである。
TECHNICAL FIELD The present invention relates to a stent device comprising at least one tubular member comprising a plurality of longitudinally continuous cylindrical spring members extending longitudinally and interconnected by connecting members. The cylindrical member is an endless wire with a zigzag arrangement having arm sections extending between the elbow sections, the cylindrical member being capable of self-expansion from a relatively small diameter radial compression state to a large diameter state. .
背景技術
かかるステントデバイスは、欧州特許EP0480667号に開示されている。ジグザグ配置のエンドレスワイヤから構成される円筒形ばね部材は、通常Z字形ステントまたはジアンタルコ(Gianturco)ステントと呼ばれており,血管に半径方向に圧縮した状態で、径皮径管的(transluminal)に挿入され、次いで開放され、且つ脈管システムの血管内の所望の位置で自己拡張するということについて、非常に実用的であると言うことが証明されている。これらのステントは、非常にコンパクトな状態に圧縮できるが、導入時小さな径であるが、非常に強力な自己拡張効果により留置されると言う利点がある。周知のステントデバイスにおいては、2本の円筒状ばね部材(Z字形ステント)が移植片(graft)の両端に配置され、筒状部材の長手方向に一つのステントの肘部から、他のステントの肘部に平行に延びている単一の強固な桿により相互に接続されている。このステントデバイスは、動脈瘤を切り取るために適切であり、2本のステントは、動脈瘤の両側の健全な血管に配置され、血管壁に対し移植片を押しだすことにより、動脈瘤を血管から切り取ることができる。
Such a stent device is disclosed in European Patent EP0480667. Cylindrical spring members composed of endless wires in a zigzag configuration, commonly referred to as Z-shaped or Gianturco stents, are transluminal in a radially compressed state in a blood vessel. It has proven to be very practical to be inserted and then released and to self-expand at a desired location within the vessel of the vascular system. These stents can be compressed into a very compact state, but have a small diameter at the time of introduction, but have the advantage of being deployed due to a very strong self-expanding effect. In known stent devices, two cylindrical spring members (Z-shaped stents) are placed at both ends of the graft, and from the elbow of one stent in the longitudinal direction of the tubular member, They are connected to each other by a single solid ridge extending parallel to the elbow. The stent device is suitable for cutting an aneurysm, and the two stents are placed in healthy blood vessels on both sides of the aneurysm and push the graft against the vessel wall to remove the aneurysm from the blood vessel. Can be cut out.
いくつかのステントを長いステントデバイスに接合することは可能であるが、カーブした血管路に沿ってステントデバイスを問題なく適切に挿入をするため、充分な柔軟性を得ることは困難である。シュータ(Chuter)氏の発明したステントデバイス(EP第0539237号参照)は、いくつかのZ字形ステントが、肘部に目ができるように接合され、該目に、厚くされた端部区分を有する桿が挿入される。該桿は、該目によって端部区分が停止されるまで、互いに遠ざかるよう変位できるので、一つのステントは、他に対して角度をなして曲がることができる。しかしながら、長期間の留置では、デバイスは、血管に起こりうる継続する脈動負荷によって生ずるステントの継続する移動により、摩耗による損傷を受けることになる。 Although several stents can be joined to a long stent device, it is difficult to obtain sufficient flexibility to properly insert the stent device along the curved vessel tract without problems. A stent device invented by Chuter (see EP 0539237), in which several Z-shaped stents are joined so that the eye can be seen in the elbow and the eye has a thickened end section. A spear is inserted. The folds can be displaced away from each other until the end section is stopped by the eye so that one stent can bend at an angle relative to the other. However, in long-term placement, the device will be damaged by wear due to the continued movement of the stent caused by the continued pulsating load that can occur in the blood vessels.
他の従来のステントデバイスは、バルーン拡張型で、連絡部材により接合されるいくつかのステント本体を有している。かかるデバイスは、現実的に可撓性はなく、血管壁に適切に固定するため、正確な径に拡張されるバルーンに完全に依存するものである。長期間経つと、血管の形状は変化し、強固なバルーン拡張型ステント本体を固定するのに負の影響が出てくる。 Other conventional stent devices are balloon expandable and have several stent bodies that are joined by a communication member. Such devices are practically inflexible and rely entirely on balloons that are expanded to the correct diameter to properly secure to the vessel wall. Over time, the shape of the blood vessels changes and negatively affects the fixation of a strong balloon expandable stent body.
かかる自己拡張型でないステントデバイスは、EP第0335341号に記載されており、それには2本の隣接するステントの肘部間に、ほぼ円周方向に延びる連絡部材によりいくつかのステントを接合することが開示されている。拡張状態では、かかるデバイスは特殊な長手方向の強固性は備えていない。 Such a non-self-expanding stent device is described in EP 0335341, in which several stents are joined by means of a generally circumferential connecting member between the elbows of two adjacent stents. Is disclosed. In the expanded state, such devices do not have special longitudinal stiffness.
他の自己拡張型でないステントデバイスは、EP第0712614号に記載されており、それには波形環状ワイヤにより形成されたステントにより、移植片の両端が血管に固定され、その先端領域は筒状部材の長手方向に延びる連絡部材により相互接続されていることが開示されている。連絡部材を先端領域に固着し、並びに環状ワイヤの波形形状が、環状ワイヤの軸方向に働く力を、より離れた環状ワイヤに伝達させないようにし、同時に軸方向の圧縮は筒状部材の径を局所的に拡張させるため、問題を更に増加させる。血管内に長時間留置することは、環状ワイヤのいくつかは、他の環状ワイヤに関して、血管の長手方向に変位させられ、同時に中間の環状ワイヤは大きな径に緩慢に変形され、且つ血管壁は局所的に疲労し、それに応じて大きな径に成長していく。更に2本のステントは相互接続されていないので、一つの移植片の端部は他の移植片の端部に対して移動する。更にバルーン拡張型のステントは、血管を介しての流れが、バルーンがステントの膨張に関して拡張される間完全にしゃ断されるという欠点がある。 Another stent device that is not self-expanding is described in EP 0712614, in which a stent formed of a corrugated annular wire secures both ends of the graft to a blood vessel, the distal region of which is a tubular member. It is disclosed that they are interconnected by a longitudinally extending connecting member. The connecting member is fixed to the tip region, and the corrugated shape of the annular wire prevents the axial force of the annular wire from being transmitted to the more distant annular wire, and at the same time the axial compression reduces the diameter of the tubular member. The problem is further increased because of local expansion. Indwelling in a blood vessel for a long time means that some of the annular wires are displaced in the longitudinal direction of the blood vessel with respect to other annular wires, while the intermediate annular wire is slowly deformed to a large diameter, and the vessel wall is Fatigue locally and grow to larger diameters accordingly. In addition, since the two stents are not interconnected, the end of one graft moves relative to the end of the other graft. Furthermore, balloon expandable stents have the disadvantage that flow through the blood vessels is completely interrupted while the balloon is expanded with respect to stent expansion.
周知のステントデバイスの問題は、半径方向の圧力に対してあまりにも柔軟で、筒状部材の長手軸の曲げに対してはあまりにも硬直であることである。半径方向の圧力に対する適切な剛性は、血管の内腔(lumen)の開通を維持する主たる効果を得るのに重要で、一方曲げに対する柔軟性は、強度の血管カーブのある領域における血管壁に対して摩擦ロッキングを阻止するのに望ましいことである。
高度の曲げに対する柔軟性の要求は、留置状態の特性に対しても適切であり、曲げ剛性があまりにも大きいと、デバイスは血管に損傷を負わせることになる。
A problem with known stent devices is that they are too flexible for radial pressure and too rigid for bending the longitudinal axis of the tubular member. Appropriate stiffness against radial pressure is important to obtain the main effect of maintaining the lumen lumen open, while bending flexibility is relative to the vessel wall in areas with strong vessel curves. This is desirable to prevent friction locking.
The requirement for flexibility for a high degree of bending is also appropriate for indwelling properties, and if the bending stiffness is too great, the device will damage the blood vessel.
本発明の目的は、半径方向の圧力に対する適切な剛性と、多くの連続するステントが相互接続される時でさえ適切な高度の曲げに対する柔軟性の要求を満たすステントデバイスを提供することにある。更に他の目的は、従来のデバイスよりも長期間にわたり留置される血管内での移動傾向が、より僅かなステントデバイスを提供することにある。 It is an object of the present invention to provide a stent device that meets the requirements of adequate stiffness against radial pressure and flexibility for proper high bending even when many successive stents are interconnected. Yet another object is to provide a stent device that is less prone to movement within a vessel that is indwelled over a longer period of time than conventional devices.
発明の開示
かかる見地において、本発明によるステントデバイスは、個々の円筒形部材と引き続く円筒形部材の間の長手方向に、肘部から隔てた前記円筒形部材の腕部に、強固に固定した少なくとも3個の可撓性連絡部材を設けることを特徴とするものである。
DISCLOSURE OF THE INVENTION In this aspect, the stent device according to the present invention is at least fixedly secured to the arm of the cylindrical member spaced from the elbow in the longitudinal direction between the individual cylindrical member and the subsequent cylindrical member. Three flexible communication members are provided.
可撓性連絡部材を肘部から隔てた位置で腕部に固定することにより、連絡部材は長くなり、より長くなることは、連絡部材の剛性を横方向の偏移に対して減少することができる。筒状部材がカーブしている時、カーブの内側の連絡部材は2個の最も近い円筒形ばね部材(以下Z字形ステントと呼ぶ)間の距離を同時に減少できるので、より容易に偏移できる。部材の装着時、腕部の内側の距離は、組み合わされた肘部が、連絡部材に対して偏移自由となり、Z字形ステントにより一様な偏移コースを与えることになり、そのコースにおいては肘部が連絡部材から離れて対面することにより、半径方向外側に強く偏移することを阻止できることになり、さもなければ血管壁に煩わしいポイント負荷を与えることになる。 By fixing the flexible connecting member to the arm part at a position separated from the elbow part, the connecting member becomes longer, and the longer length can reduce the rigidity of the connecting member against lateral displacement. it can. When the tubular member is curved, the connecting member inside the curve can be shifted more easily because the distance between the two closest cylindrical spring members (hereinafter referred to as Z-shaped stents) can be reduced simultaneously. When the member is attached, the distance inside the arm is such that the combined elbow is free to shift with respect to the connecting member, and a uniform shift course is given by the Z-shaped stent. When the elbow part faces away from the connecting member, it is possible to prevent the elbow part from being strongly shifted radially outward, otherwise, a troublesome point load is applied to the blood vessel wall.
連絡部材の両端が、腕部に強固に固定されることは重要である。これによりステント材料の長期間の疲労損傷を減少でき、相互接続された腕部間の連結が強固になるので、Z字形ステントに影響を受ける軸方向圧力は、圧力伝達連絡部材を介して引き続くZ字形ステントに伝達される。この後者の効果は、植え込み後ステントの移動を減少または阻止するのに非常に重要である。血管壁面が、例えばステントデバイスの単に一つの側部から継続する血圧の脈動の結果として、ステント本体のステントで疲労し始め、それの把持が緩むならば、血管の長手方向におけるステントの変位は、引き続くステントの圧力剛体連絡部材により阻止される。このようにして、多くの接合されたステントを有する全筒状部材は、すべてのステントを所定位置に保持するのに役立ち、血管壁への長手方向の影響は、全筒状部材の長手方向に亘って分散される。 It is important that both ends of the connecting member are firmly fixed to the arm portion. This reduces long-term fatigue damage of the stent material and strengthens the connection between the interconnected arms so that the axial pressure affected by the Z-shaped stent continues through the pressure-transmitting communication member. Is transmitted to the shaped stent. This latter effect is very important in reducing or preventing stent migration after implantation. If the vessel wall begins to fatigue with the stent of the stent body, for example as a result of blood pressure pulsations that continue from just one side of the stent device, and its grip loosens, the displacement of the stent in the longitudinal direction of the vessel is It is blocked by the subsequent pressure rigid body connecting member of the stent. In this way, an all-cylindrical member with many joined stents helps to hold all the stents in place, and the longitudinal effect on the vessel wall is in the longitudinal direction of the all-cylindrical member. Distributed over.
円筒形ばね部材は、自己拡張するので、部材を別個のバルーンにより拡張する必要がないので、多くのばね部材からなる筒状部材を設置することは問題ではない。このことは、ステントデバイスが筒状移植片からなるとき、互いに短い距離に配置されたばね部材によりその全長に亘って支持できるので、特に利点がある。本発明によるステントデバイスは、簡単に挿入でき、所望の位置に設置でき、且つ強力な血管開通効果があり、長期または永久的な留置において、デバイスは移動に対して、且つ血管の損傷に対して僅かの傾向しか有しないため、異常血管の内腔治療に良好に適応出来るものである。 Since the cylindrical spring member is self-expanding, it is not a problem to install a cylindrical member made up of many spring members, since it is not necessary to expand the member with a separate balloon. This is particularly advantageous when the stent device consists of a tubular graft, since it can be supported over its entire length by spring members arranged at a short distance from each other. The stent device according to the present invention can be easily inserted, placed in a desired position, and has a strong vascular patency effect, and in long-term or permanent placement, the device is against movement and against vascular damage. Since it has only a slight tendency, it can be well applied to the lumen treatment of abnormal blood vessels.
好ましい実施の形態においては、筒状部材が大きな直径で非圧縮状態にあるとき、可撓性連絡部材が、長手方向に傾斜して延びている。傾斜したコースは、筒状部材内に内腔を開通したまま保つのに役立ち、それは部分的にばね部材が、円周且つ長手方向共に影響を受け、部分的に軸方向の負荷に影響されたとき、連絡部材が、デバイスの筒状形状に基づいて僅かに外側にカーブし、且つ筒状部材を開放し続けるように務めるからである。更に傾斜コースは、筒状部材全体に亘って、ねじり応力を伝達するのに役立つ。 In a preferred embodiment, when the tubular member is in a non-compressed state with a large diameter, the flexible communication member extends with an inclination in the longitudinal direction. The slanted course helps to keep the lumen open in the tubular member, which is partly affected by the spring member, both circumferentially and longitudinally, and partly affected by the axial load. This is because the connecting member curves slightly outward based on the cylindrical shape of the device and serves to keep the cylindrical member open. Furthermore, the inclined course serves to transmit torsional stress throughout the tubular member.
筒状部材を異なる方向に曲げるとき、比較的一様な特性を得るために、個々の連絡部材は、それらと同じ方向に延ばす組み合わされた腕部に連結されることが好ましく、それにより、連絡部材と腕部は、筒状部材が大きな直径で非圧縮状態に有るとき、筒状部材内のいくつかの実質的な螺旋コースに沿って延びる。このようにして、個々の連絡部材は2個の組み合わされた腕部と同じアーク状方向に延長し、該部材はまた筒状部材に大きな圧力剛性を分け与える。更にすべての螺旋コースは、筒状部材の製造が簡単になるので、同じ方向に曲げることが好ましい。 In order to obtain a relatively uniform characteristic when bending the tubular member in different directions, it is preferred that the individual connecting members are connected to a combined arm that extends in the same direction so that they communicate. The member and arm extend along some substantial spiral course in the tubular member when the tubular member is in a large diameter and uncompressed state. In this way, the individual connecting members extend in the same arcuate direction as the two combined arms, which also provides great pressure stiffness to the tubular member. Furthermore, it is preferable that all the spiral courses are bent in the same direction because the manufacture of the cylindrical member is simplified.
開放状態に留めるためのデバイスの能力は、隣接円筒形部材間の連絡部材が、円周方向に一様に分布されているとき最高である。少なくとも3個の連絡部材があるので、2個の連絡部材間の円周方向における角度は最大120゜で有り、連絡部材が更に前述のように傾斜して延びるとき、唯一の方向への曲げは、筒状部材にねじれを来すことはない。 The device's ability to remain open is best when the connecting members between adjacent cylindrical members are evenly distributed in the circumferential direction. Since there are at least three connecting members, the angle in the circumferential direction between the two connecting members is a maximum of 120 °, and when the connecting member extends further incline as described above, the bending in the only direction is The cylindrical member is not twisted.
特に大きな曲げに対する柔軟性のある実施の形態においては、個々の円筒形部材の上に、先行する円筒形部材に対する連絡部材は、引き続く円筒形部材に対する連絡部材が、前記個々の円筒形部材に固定される腕部から、少なくとも一つの腕部に位置する腕部に固定される。このことは、連絡部材の両側において円周並びに長手方向共に自由な肘部があることを意味し、該肘部は、カーブの内側の隣接ステントに接近して移動され、筒状部材が曲げられたとき、外側の隣接ステントから更に遠ざかっていく。 In an embodiment that is particularly flexible to large bending, on each individual cylindrical member, the connecting member for the preceding cylindrical member is fixed to the said individual cylindrical member. The arm portion is fixed to an arm portion located on at least one arm portion. This means that there are free elbows, both circumferentially and longitudinally, on both sides of the connecting member, which are moved closer to the adjacent stent inside the curve and the tubular member is bent. When moving away from the adjacent adjacent stent.
対称そして可能な範囲、ばね部材の一様な変形パターンを得るために、連絡部材は、腕部のほぼ中央で固定される。 In order to obtain a symmetrical and possible extent, a uniform deformation pattern of the spring member, the connecting member is fixed approximately at the center of the arm.
他の実施の形態では、連絡部材は、円筒形ばね部材よりも柔軟性があるばね材料、例えば、好ましくは焼き鈍しステンレススチールからなる。これにより連絡部材は、筒状部材を曲げることでより大きな偏移が得られ、曲げられた部分の内側のばね部材は、互いに近づくよう容易に移動することができる。 In other embodiments, the connecting member comprises a spring material that is more flexible than the cylindrical spring member, for example, preferably annealed stainless steel. As a result, the connecting member can obtain a larger shift by bending the tubular member, and the spring members inside the bent portion can easily move so as to approach each other.
ステントデバイスは、筒状移植片材料を支持する筒状部材により簡単な方法で得られる血管プロテーゼとして通常使用される。該筒状移植片材料は、筒状部材の長手方向に可撓性または柔軟性がある。移植片材料の柔軟性は、筒状部材のカーブの外側にある材料を伸展または拡張させることになる。 Stent devices are commonly used as vascular prostheses that can be obtained in a simple manner with a tubular member that supports the tubular graft material. The tubular graft material is flexible or flexible in the longitudinal direction of the tubular member. The flexibility of the graft material will cause the material outside the curve of the tubular member to stretch or expand.
拡張された状態で比較的大きな径のステントデバイスのセルディンガー(Seldinger)技術により、経皮挿入ができる、非常に小さい径に容易に圧縮できる他の実施の形態においては、連絡部材は、筒状部材が大きな径で非圧縮状態にあるとき、円筒形状のばね部材の相互の間隔を保つ長さを有し、移植片材料は、ばね部材間の領域における環状ベローズの折り畳みを有している。カーブの外側に使用される余分の移植片材料は、デバイスが圧縮された状態にあるとき、ばね部材間の領域に横たわり、さもなければ該領域は、ばね部材間に延びる連絡部材の区分のためのスペースを提供するに過ぎない。最高のコンパクトな圧縮を得るために、移植片材料は、ばね部材のベローズの折り畳みから実質的に自由であることが好ましい。 In other embodiments that can be percutaneously inserted and easily compressed to a very small diameter by the Seldinger technology of a relatively large diameter stent device in the expanded state, the communication member is tubular. When the members are in a non-compressed state with a large diameter, the length of the cylindrical spring members is such that the graft material has an annular bellows fold in the region between the spring members. Excess graft material used outside the curve lies in the region between the spring members when the device is in a compressed state, otherwise the region is due to the segment of the connecting member extending between the spring members. It only provides the space. In order to obtain the best compact compression, the graft material is preferably substantially free from the folding of the bellows of the spring member.
移植片材料に必要な柔軟性を与えるため、筒状部材の長手方向に延びる移植片材料の糸は、織られた糸であり、一方筒状部材の円周方向に延びる糸は、真っ直ぐな糸であり、非圧縮状態においては筒状部材の最大の直径を制限することは可能である。このようにして、環状糸は、ばね部材が最大の径に拡張したとき、該部材からばね力を吸収するのに役立つ。このような最大の径を制限することに関して、ばね部材は、例えば狭窄時、血管の開通用途において有効である適切な大きな拡張力を与える比較的重要な設計が与えられ、一方血管壁は、環状糸が完全に拡張しているところで、ばね部材が完全に拡張するならば、さらなる負荷に対して自由を保持する。 In order to give the graft material the necessary flexibility, the thread of the graft material extending in the longitudinal direction of the tubular member is a woven thread, while the thread extending in the circumferential direction of the tubular member is a straight thread. In the non-compressed state, it is possible to limit the maximum diameter of the cylindrical member. In this way, the annular thread serves to absorb the spring force from the spring member when it is expanded to its maximum diameter. With respect to limiting such maximum diameter, the spring member is provided with a relatively important design that provides an adequately large expansion force that is effective in vascular opening applications, for example, during stenosis, while the vessel wall is annular If the spring member is fully expanded where the thread is fully expanded, it retains freedom against further loads.
発明の実施するための最良の形態
以下本発明を図示する実施の形態について詳述する。図1に示す脈管内プロテーゼ(prosthesis)は、ステントデバイスの好ましい実施の形態であって、単一の管として形成されているが、例えば2本の僅かに小さな管に分岐されている比較的大きな管を有するY字形構造のような分岐した構造としても形成できる。後者の設計は、例えばアブドミナル大動脈瘤の最小の侵入治療に使用され、他方単一の管を有する設計では、動脈瘤や瘻孔または何か他の血管の異形における血管プロテーゼとして使用するため、狭窄における血管の内腔(lumen)を再生するためのような、単一の血管内腔の治療のため使用される。
BEST MODE FOR CARRYING OUT THE INVENTION Embodiments illustrating the present invention will be described in detail below. The intravascular prosthesis shown in FIG. 1 is a preferred embodiment of a stent device, which is formed as a single tube, but is relatively large, eg, branched into two slightly smaller tubes. It can also be formed as a branched structure such as a Y-shaped structure with a tube. The latter design is used, for example, for minimal invasion treatment of an abdominal aortic aneurysm, while a design with a single tube is used as a vascular prosthesis in aneurysms, fistulas or any other vascular deformity, so in stenosis Used for the treatment of a single vessel lumen, such as to regenerate the lumen of a vessel.
ステントデバイス1は、筒状部材3に支持された移植片2を具備し、筒状部材3は連絡部材5により相互接続された多くの円筒形ばね部材4から構成されている。
The stent device 1 comprises a graft 2 supported by a
個々のばね部材4は、ステンレススチールまたはニチノール(nitinol)製のワイヤから構成された周知のデザインのZ字形ステントである。ワイヤは円筒形面に延びるジグザグ形状に曲げられており、ワイヤの両端はエンドレスになるように互いに接合され、且つ円筒形ばね部材は閉じられている。図2に、線aに沿って切り開かれ、且つ明確にするため平面形状に広げられた3個のばね部材を示す。筒状部材の長手方向は、矢印bで示されている。以下説明する異なる図において、同様な型の詳細を同様な参照符号で示す。
The
ばね部材4は、2つの肘部7間にそれぞれ延びる腕部6を有している。腕部は、無負荷状態時には、図示するようにほぼ真っ直ぐで、大きな軸方向の圧力を受けるため剛性を有することが好ましいが、曲げて作ることもできる。肘部は、ワイヤが適切な曲率半径の単一の角度で延びているような単純な曲げとして示されている。しかしながら、好ましくは肘部は、例えば欧州特許EP−A1第0539237号の図5に示されるように、ワイヤが腕部の端部においてΩ字状コースに折り曲げられている複雑なデザインをしている。
The
図2に示すように、連絡部材5は、部材1の長手方向bに対して斜めに延び、開かれた状態では、連絡部材は大部分が腕部6と平行に延び、且つまた互いに平行に延びている。部材1が円筒形状においては、このことは長手方向bに互いに平行に変位した螺旋コースに対応している。
As shown in FIG. 2, the connecting
組み合わされた連絡部材を有する腕部は、製造工程において望ましい全体的に螺旋に沿う切断部がないワイヤコースとして製造されるが、これは連絡部材が腕部より実質的に僅かの剛性しか持たないときのみ可能で、筒状部材が曲げられたとき、連絡部材は横方向に偏移できる。しかしながら、図2に示す中断されたコースでは、スペースが一対の相互接続された腕部の後に続き、且つ螺旋の方向に見られるように他の一対の相互接続された腕部が来るということは、しばしば好ましいことである。スペースにおいては、肘区分は、互いに接近してまたは離れて自由に移動できる。 Arms with combined connecting members are manufactured as a wire course without a generally helically cut, which is desirable in the manufacturing process, but this means that the connecting member has substantially less stiffness than the arms. Only when possible, when the tubular member is bent, the connecting member can shift laterally. However, in the interrupted course shown in FIG. 2, it follows that the space follows a pair of interconnected arms and that another pair of interconnected arms comes as seen in the direction of the spiral. Often preferred. In space, the elbow sections can move freely close to or away from each other.
連絡部材5の両端は、組み合わされた腕部6に強固に固定されている。図3には、固定点8が、肘部から離れていることを示している。たとえば固定は、半田付け、溶着または連絡部材と腕部間の相互の幾何学的係合で幾何学的にロックされことによりなされる。この型の固定は、連絡部材の両端でなされる。連結は、連絡部材の端部区分から離間した他の場所でなすこともできる。螺旋に沿う連絡部材が、単一の適切に柔軟な接続ワイヤを介して接続される場合、ワイヤは、所望の腕部の各々における少なくとも一つの位置で腕部に強固に固定される。固定点は、肘部から離間していなければならないが、図3に示す腕部のほぼ中央である必要もない。固定点を、最も近い肘部から腕部の距離の10乃至50%の間隔に設置することが可能である。
Both ends of the connecting
連絡部材5の有利な配置を示す図4には、連絡部材5が装着された腕区分の各々の間に、連絡部材がない腕部が見られることである。円周方向並びに長手方向共に、自由な肘部があることである。この開放構造によって、個々のばね部材は、図5乃至図7に示すように可撓的に変形できる。図5に、ばね部材4が連絡部材5により相互の距離c離れて保持されている、ほぼ無負荷状態が示されている。距離cは、部材5を適切な長さに選択することにより、特定用途に適応できるよう自由に選べる。距離cが、完全に拡張状態の筒状部材の直径2.5乃至100%、好ましくは5乃至30%の範囲にあり、ばね部材が次いで血管を常に合理的に支持するため適切に接近して配置され、同時に移植片材料を吸収し、且つ部材の相互の変形のため、ばね部材間にスペースが置かれるならば利点がある。 図6に、ばね部材が、長手方向(カーブの内側)に圧力を受けた場合の状況を示す。連絡部材が横方向に偏移し、取り囲んでいる肘と腕部が変形し、その結果、隣接する肘部が互いに接近するということが分かる。図7には、ばね部材が、長手方向(カーブの外側)の張力により、影響を受ける変形パターンを示している。連絡部材5は長く引っぱることができないので、取り囲む肘と腕部の変形が生じ、隣接する肘部が更に互いに離間し、それにより筒状部材の面の延びが生ずることになる。
In FIG. 4 which shows an advantageous arrangement of the
ステントデバイスが移植片からなるとき、後者は長手方向に可撓性または弾力性がある。このことは糸から移植片材料を織成することにより得られ、環状糸10は、真っ直ぐな糸で円周方向に延び、且つ長手方向糸11は、織られた糸であって長手方向に延び、即ち糸は、移植片が長手方向に延びるように波形コースを有している。移植片材料は、ポリエステルからなることが好ましい。織られた糸の使用の代わりに、それ自体弾力性があり、また同様に通常移植片材料として使用される、PTFEからなる移植片を使用することも可能である。
When the stent device consists of a graft, the latter is flexible or elastic in the longitudinal direction. This is obtained by weaving the graft material from yarn, the
更に、移植片材料は、図1に示すようにばね部材間の領域にベロー形状をしていても良い。ステントデバイスが、植え込みシース12の内側に半径方向圧縮状態でコンパクトにされているとき、延長部で使用される余分の移植片材料が、ばね部材の半径方向外側に配置されるので、このことは利点がある。図9に、ばね部材と連絡部材用の実際のワイヤが、ばね部材で緊縛されたパイル13にコンパクトにされ、且つこれらのパイルが、僅かの連絡部材が次のパイル13に移行する開放された領域14で分離されていることが示されている。ベローの折り畳みは、圧縮時開放領域14に直接設置される。
Furthermore, the graft material may have a bellows shape in the region between the spring members as shown in FIG. This is because when the stent device is compacted in a radially compressed state inside the
前述の実施の形態から詳述されたことは請求の範囲内で、他の実施の形態と結合され、且つ例えば、ばね部材または連絡部材はステンレススチールまたはニチノールより他の材料、例えば可撓性プラスチック材料または金属材料、または弾力性または超弾力特性を示す合成物からなるという他の変形も可能である。 What has been described in detail from the foregoing embodiments is within the scope of the claims, combined with other embodiments, and, for example, the spring member or connecting member is made of a material other than stainless steel or Nitinol, such as a flexible plastic. Other variations are possible, consisting of a material or metallic material, or a composite exhibiting elastic or super-elastic properties.
Claims (7)
前記連絡部材(5)は、前記筒状部材が大きな直径の非圧縮状態にあるとき、前記円筒形ばね部材(4)間を一つの相互距離(c)で保持し、
前記筒状移植片材料は、前記円筒形ばね部材の間の領域(14)に折り畳まれた環状ベローズを有し、
前記筒状部材(3)における前記筒状移植片材料(2)は、前記筒状部材の長手方向(b)に変形可能である
ことを特徴とするステントデバイス。 A stent device (1) comprising a tubular graft (2) and at least one tubular member (3), the tubular member (3) extending in the longitudinal direction and interconnected by a connecting member (5) In a stent device (1) having a plurality of connected longitudinally continuous cylindrical spring members (4),
The connecting member (5) holds the cylindrical spring member (4) at one mutual distance (c) when the cylindrical member is in an uncompressed state with a large diameter,
The tubular graft material has an annular bellows folded into a region (14) between the cylindrical spring members;
The stent device, wherein the tubular graft material (2) in the tubular member (3) is deformable in the longitudinal direction (b) of the tubular member.
ことを特徴とする請求項1記載のステントデバイス。 Stent device according to claim 1, characterized in that the cylindrical graft material (2) is substantially free from bellows folded in the cylindrical spring member.
ことを特徴とする請求項1乃至2のいずれか一つに記載のステントデバイス。 The stent device according to any one of claims 1 to 2, wherein the mutual distance (c) is in a range of 2.5 to 100% of a diameter of the tubular member in an uncompressed state. .
ことを特徴とする請求項3記載のステントデバイス。 The stent device according to claim 3, wherein the mutual distance (c) is in the range of 5 to 30% of the diameter of the tubular member in an uncompressed state.
ことを特徴とする請求項1乃至4のいずれか一つに記載のステントデバイス。 The graft thread (11) extending in the longitudinal direction (b) of the tubular member is a woven thread, while the circumferentially extending thread (10) of the tubular member is a straight thread. The stent device according to any one of claims 1 to 4, wherein a maximum diameter of the tubular member is limited in an uncompressed state.
ことを特徴とする請求項1乃至5いずれか一つに記載のステントデバイス。 The stent device according to any one of claims 1 to 5, characterized in that the connecting member (5) comprises a spring member that is more deformable than the cylindrical spring member.
ことを特徴とする請求項1乃至6のいずれか一つに記載のステントデバイス。 7. At least three flexible connecting members (5) between each cylindrical spring-shaped member and a longitudinally adjacent cylindrical spring-shaped member (4). The stent device according to one.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK199800256A DK174814B1 (en) | 1998-02-25 | 1998-02-25 | stent device |
DK0256/98 | 1998-02-25 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2000533073A Division JP4094226B2 (en) | 1998-02-25 | 1999-02-24 | Stent device |
Publications (2)
Publication Number | Publication Date |
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JP2008149155A true JP2008149155A (en) | 2008-07-03 |
JP4772807B2 JP4772807B2 (en) | 2011-09-14 |
Family
ID=8091497
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
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JP2000533073A Expired - Fee Related JP4094226B2 (en) | 1998-02-25 | 1999-02-24 | Stent device |
JP2008004828A Expired - Lifetime JP4772807B2 (en) | 1998-02-25 | 2008-01-11 | Stent device |
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Application Number | Title | Priority Date | Filing Date |
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JP2000533073A Expired - Fee Related JP4094226B2 (en) | 1998-02-25 | 1999-02-24 | Stent device |
Country Status (7)
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US (1) | US6589275B1 (en) |
EP (2) | EP1073386B1 (en) |
JP (2) | JP4094226B2 (en) |
AU (1) | AU729883B2 (en) |
DE (1) | DE69912940T2 (en) |
DK (2) | DK174814B1 (en) |
WO (1) | WO1999043272A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009240615A (en) * | 2008-03-31 | 2009-10-22 | Terumo Corp | In-vivo indwelling stent and living organ dilator |
Families Citing this family (61)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6395019B2 (en) | 1998-02-09 | 2002-05-28 | Trivascular, Inc. | Endovascular graft |
US20100318181A1 (en) * | 1998-12-11 | 2010-12-16 | Endologix, Inc. | Implantable vascular graft |
US6551351B2 (en) * | 1999-07-02 | 2003-04-22 | Scimed Life Systems | Spiral wound stent |
CA2409512A1 (en) * | 2000-05-08 | 2001-11-15 | Qtl Biosystems Llc | Improvements to the fluorescent polymer-qtl approach to biosensing |
EP1337200A2 (en) * | 2000-11-17 | 2003-08-27 | Evysio Medical Devices Ulc | Endovascular prosthesis |
US6786919B1 (en) * | 2001-07-10 | 2004-09-07 | Endovascular Technologies, Inc. | Self-expanding intravascular device with protector members |
US7695446B2 (en) | 2002-12-02 | 2010-04-13 | Gi Dynamics, Inc. | Methods of treatment using a bariatric sleeve |
US7678068B2 (en) | 2002-12-02 | 2010-03-16 | Gi Dynamics, Inc. | Atraumatic delivery devices |
US7025791B2 (en) * | 2002-12-02 | 2006-04-11 | Gi Dynamics, Inc. | Bariatric sleeve |
US7608114B2 (en) | 2002-12-02 | 2009-10-27 | Gi Dynamics, Inc. | Bariatric sleeve |
US7122058B2 (en) | 2002-12-02 | 2006-10-17 | Gi Dynamics, Inc. | Anti-obesity devices |
US8057420B2 (en) | 2003-12-09 | 2011-11-15 | Gi Dynamics, Inc. | Gastrointestinal implant with drawstring |
JP4512597B2 (en) | 2003-12-09 | 2010-07-28 | ジーアイ・ダイナミックス・インコーポレーテッド | Device fixed in gastrointestinal tract and fixing method |
US7402170B2 (en) * | 2003-12-30 | 2008-07-22 | Scimed Life Systems, Inc. | Crimp and weld wire connection |
US20050288775A1 (en) * | 2004-06-24 | 2005-12-29 | Scimed Life Systems, Inc. | Metallic fibers reinforced textile prosthesis |
EP1776066B1 (en) * | 2004-07-02 | 2012-02-08 | Cook Medical Technologies LLC | Stent having arcuate struts |
ATE506042T1 (en) | 2004-07-09 | 2011-05-15 | Gi Dynamics Inc | DEVICES FOR PLACEMENT OF A GASTROINTESTINAL SLEEVE |
EP1799145B1 (en) | 2004-09-17 | 2016-12-21 | GI Dynamics, Inc. | Gastrointestinal anchor |
US7695506B2 (en) * | 2004-09-21 | 2010-04-13 | Boston Scientific Scimed, Inc. | Atraumatic connections for multi-component stents |
US7976488B2 (en) | 2005-06-08 | 2011-07-12 | Gi Dynamics, Inc. | Gastrointestinal anchor compliance |
US8292946B2 (en) * | 2005-10-25 | 2012-10-23 | Boston Scientific Scimed, Inc. | Medical implants with limited resistance to migration |
US9622888B2 (en) * | 2006-11-16 | 2017-04-18 | W. L. Gore & Associates, Inc. | Stent having flexibly connected adjacent stent elements |
AU2008211193A1 (en) | 2007-01-29 | 2008-08-07 | Cook Incorporated | Medical prosthesis and method of production |
JP4961517B2 (en) * | 2007-02-20 | 2012-06-27 | 国立大学法人福井大学 | Stent and therapeutic device for tubular organ using the same |
US8801647B2 (en) | 2007-02-22 | 2014-08-12 | Gi Dynamics, Inc. | Use of a gastrointestinal sleeve to treat bariatric surgery fistulas and leaks |
US8663309B2 (en) | 2007-09-26 | 2014-03-04 | Trivascular, Inc. | Asymmetric stent apparatus and method |
US8066755B2 (en) | 2007-09-26 | 2011-11-29 | Trivascular, Inc. | System and method of pivoted stent deployment |
US8226701B2 (en) | 2007-09-26 | 2012-07-24 | Trivascular, Inc. | Stent and delivery system for deployment thereof |
CN101917929A (en) | 2007-10-04 | 2010-12-15 | 特里瓦斯库拉尔公司 | Modular vascular graft for low profile percutaneous delivery |
EP2201914B1 (en) * | 2007-10-16 | 2018-12-05 | Kabushiki Kaisha Kyoto Iryo Sekkei | Tube-forming element for vascular stent and vascular stent |
US8083789B2 (en) | 2007-11-16 | 2011-12-27 | Trivascular, Inc. | Securement assembly and method for expandable endovascular device |
US8328861B2 (en) | 2007-11-16 | 2012-12-11 | Trivascular, Inc. | Delivery system and method for bifurcated graft |
US7905915B2 (en) * | 2007-12-27 | 2011-03-15 | Cook Incorporated | Z-stent with incorporated barbs |
US8926688B2 (en) | 2008-01-11 | 2015-01-06 | W. L. Gore & Assoc. Inc. | Stent having adjacent elements connected by flexible webs |
GB2467097B (en) | 2008-11-06 | 2011-01-12 | Cook William Europ | Stent member |
US9526648B2 (en) | 2010-06-13 | 2016-12-27 | Synerz Medical, Inc. | Intragastric device for treating obesity |
US10420665B2 (en) | 2010-06-13 | 2019-09-24 | W. L. Gore & Associates, Inc. | Intragastric device for treating obesity |
US10010439B2 (en) | 2010-06-13 | 2018-07-03 | Synerz Medical, Inc. | Intragastric device for treating obesity |
US8628554B2 (en) | 2010-06-13 | 2014-01-14 | Virender K. Sharma | Intragastric device for treating obesity |
US9681939B2 (en) | 2011-11-18 | 2017-06-20 | Cook Medical Technologies Llc | Silane bonded medical devices and method of making same |
US8992595B2 (en) | 2012-04-04 | 2015-03-31 | Trivascular, Inc. | Durable stent graft with tapered struts and stable delivery methods and devices |
US9498363B2 (en) | 2012-04-06 | 2016-11-22 | Trivascular, Inc. | Delivery catheter for endovascular device |
CN104586537B (en) * | 2013-10-31 | 2017-05-10 | 微创心脉医疗科技(上海)有限公司 | Covered stent |
US10299948B2 (en) | 2014-11-26 | 2019-05-28 | W. L. Gore & Associates, Inc. | Balloon expandable endoprosthesis |
KR101653459B1 (en) * | 2014-12-01 | 2016-09-01 | 엘지전자 주식회사 | Vacuum clenar and dust collecting apparatus |
US10779980B2 (en) | 2016-04-27 | 2020-09-22 | Synerz Medical, Inc. | Intragastric device for treating obesity |
CN105832450B (en) * | 2016-05-19 | 2018-08-24 | 郭莹 | A kind of intravascular intervention holder |
US10568752B2 (en) | 2016-05-25 | 2020-02-25 | W. L. Gore & Associates, Inc. | Controlled endoprosthesis balloon expansion |
US10828152B2 (en) | 2016-08-11 | 2020-11-10 | 4C Medical Technologies, Inc. | Heart chamber prosthetic valve implant with base, spring and dome sections with single chamber anchoring for preservation, supplementation and/or replacement of native valve function |
US10653523B2 (en) | 2017-01-19 | 2020-05-19 | 4C Medical Technologies, Inc. | Systems, methods and devices for delivery systems, methods and devices for implanting prosthetic heart valves |
US10561495B2 (en) | 2017-01-24 | 2020-02-18 | 4C Medical Technologies, Inc. | Systems, methods and devices for two-step delivery and implantation of prosthetic heart valve |
US12029647B2 (en) | 2017-03-07 | 2024-07-09 | 4C Medical Technologies, Inc. | Systems, methods and devices for prosthetic heart valve with single valve leaflet |
US12036113B2 (en) | 2017-06-14 | 2024-07-16 | 4C Medical Technologies, Inc. | Delivery of heart chamber prosthetic valve implant |
CN209107691U (en) * | 2017-07-03 | 2019-07-16 | 深圳市科奕顿生物医疗科技有限公司 | A kind of self-inflated intraluminal stent |
US10959864B2 (en) | 2018-01-11 | 2021-03-30 | Cook Medical Technologies Llc | Barbed wire stent |
US11857441B2 (en) | 2018-09-04 | 2024-01-02 | 4C Medical Technologies, Inc. | Stent loading device |
EP3928022A4 (en) | 2019-02-19 | 2022-12-14 | Mueller International, LLC | Stent springs and stents for repairing pipes |
US11187366B2 (en) * | 2019-03-15 | 2021-11-30 | Mueller International, Llc | Stent for repairing a pipe |
US11802646B2 (en) | 2019-08-09 | 2023-10-31 | Mueller International, Llc | Pipe repair device |
US11931253B2 (en) | 2020-01-31 | 2024-03-19 | 4C Medical Technologies, Inc. | Prosthetic heart valve delivery system: ball-slide attachment |
US11992403B2 (en) | 2020-03-06 | 2024-05-28 | 4C Medical Technologies, Inc. | Devices, systems and methods for improving recapture of prosthetic heart valve device with stent frame having valve support with inwardly stent cells |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0847503A (en) * | 1993-10-01 | 1996-02-20 | Juan C Parodi | Aorta impant and method and device for restoring abdominal aortic aneurysm |
JPH09164154A (en) * | 1995-08-03 | 1997-06-24 | B Braun Celsa Sa | Tubular artificial organ |
Family Cites Families (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6221102B1 (en) * | 1983-12-09 | 2001-04-24 | Endovascular Technologies, Inc. | Intraluminal grafting system |
US5102417A (en) | 1985-11-07 | 1992-04-07 | Expandable Grafts Partnership | Expandable intraluminal graft, and method and apparatus for implanting an expandable intraluminal graft |
CA2026604A1 (en) * | 1989-10-02 | 1991-04-03 | Rodney G. Wolff | Articulated stent |
AU633453B2 (en) | 1990-10-09 | 1993-01-28 | Cook Incorporated | Percutaneous stent assembly |
CA2081424C (en) * | 1991-10-25 | 2008-12-30 | Timothy A. Chuter | Expandable transluminal graft prosthesis for repair of aneurysm |
AU671901B2 (en) * | 1993-01-14 | 1996-09-12 | Meadox Medicals, Inc. | Radially Expandable Tubular Prosthesis |
AU3783195A (en) | 1994-11-15 | 1996-05-23 | Advanced Cardiovascular Systems Inc. | Intraluminal stent for attaching a graft |
EP0831753B1 (en) * | 1995-06-01 | 2005-12-28 | Meadox Medicals, Inc. | Implantable intraluminal prosthesis |
AU5675196A (en) * | 1995-06-08 | 1997-01-09 | Bard Galway Limited | Endovascular stent |
US5776161A (en) * | 1995-10-16 | 1998-07-07 | Instent, Inc. | Medical stents, apparatus and method for making same |
CA2192520A1 (en) * | 1996-03-05 | 1997-09-05 | Ian M. Penn | Expandable stent and method for delivery of same |
FR2748199B1 (en) * | 1996-05-02 | 1998-10-09 | Braun Celsa Sa | TRANSCUTANEOUS SURGICAL ANASTOMOSABLE VASCULAR PROSTHESIS |
FR2750853B1 (en) | 1996-07-10 | 1998-12-18 | Braun Celsa Sa | MEDICAL PROSTHESIS, IN PARTICULAR FOR ANEVRISMS, WITH PERFECTIONED CONNECTION BETWEEN ITS SHEATH AND ITS STRUCTURE |
US6325826B1 (en) * | 1998-01-14 | 2001-12-04 | Advanced Stent Technologies, Inc. | Extendible stent apparatus |
WO1998020810A1 (en) * | 1996-11-12 | 1998-05-22 | Medtronic, Inc. | Flexible, radially expansible luminal prostheses |
US6033433A (en) * | 1997-04-25 | 2000-03-07 | Scimed Life Systems, Inc. | Stent configurations including spirals |
IT1292295B1 (en) * | 1997-04-29 | 1999-01-29 | Sorin Biomedica Cardio Spa | ANGIOPLASTIC STENT |
US6451049B2 (en) * | 1998-04-29 | 2002-09-17 | Sorin Biomedica Cardio, S.P.A. | Stents for angioplasty |
US5957949A (en) * | 1997-05-01 | 1999-09-28 | World Medical Manufacturing Corp. | Percutaneous placement valve stent |
US5836966A (en) * | 1997-05-22 | 1998-11-17 | Scimed Life Systems, Inc. | Variable expansion force stent |
US5972027A (en) * | 1997-09-30 | 1999-10-26 | Scimed Life Systems, Inc | Porous stent drug delivery system |
US6190406B1 (en) * | 1998-01-09 | 2001-02-20 | Nitinal Development Corporation | Intravascular stent having tapered struts |
US6533807B2 (en) * | 1998-02-05 | 2003-03-18 | Medtronic, Inc. | Radially-expandable stent and delivery system |
US6159239A (en) * | 1998-08-14 | 2000-12-12 | Prodesco, Inc. | Woven stent/graft structure |
US6280466B1 (en) * | 1999-12-03 | 2001-08-28 | Teramed Inc. | Endovascular graft system |
-
1998
- 1998-02-25 DK DK199800256A patent/DK174814B1/en not_active IP Right Cessation
-
1999
- 1999-02-24 EP EP99904734A patent/EP1073386B1/en not_active Expired - Lifetime
- 1999-02-24 DE DE69912940T patent/DE69912940T2/en not_active Expired - Lifetime
- 1999-02-24 AU AU25127/99A patent/AU729883B2/en not_active Expired
- 1999-02-24 US US09/622,326 patent/US6589275B1/en not_active Expired - Lifetime
- 1999-02-24 WO PCT/DK1999/000078 patent/WO1999043272A1/en active IP Right Grant
- 1999-02-24 EP EP03078530A patent/EP1415617A3/en not_active Withdrawn
- 1999-02-24 JP JP2000533073A patent/JP4094226B2/en not_active Expired - Fee Related
-
2001
- 2001-07-12 DK DK200101085A patent/DK176382B1/en not_active IP Right Cessation
-
2008
- 2008-01-11 JP JP2008004828A patent/JP4772807B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0847503A (en) * | 1993-10-01 | 1996-02-20 | Juan C Parodi | Aorta impant and method and device for restoring abdominal aortic aneurysm |
JPH09164154A (en) * | 1995-08-03 | 1997-06-24 | B Braun Celsa Sa | Tubular artificial organ |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009240615A (en) * | 2008-03-31 | 2009-10-22 | Terumo Corp | In-vivo indwelling stent and living organ dilator |
Also Published As
Publication number | Publication date |
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DK200101085A (en) | 2001-07-12 |
JP4772807B2 (en) | 2011-09-14 |
JP2002504393A (en) | 2002-02-12 |
AU729883B2 (en) | 2001-02-15 |
EP1073386A1 (en) | 2001-02-07 |
EP1415617A3 (en) | 2004-08-11 |
JP4094226B2 (en) | 2008-06-04 |
WO1999043272A1 (en) | 1999-09-02 |
EP1415617A2 (en) | 2004-05-06 |
DE69912940T2 (en) | 2004-09-02 |
DK174814B1 (en) | 2003-12-01 |
US6589275B1 (en) | 2003-07-08 |
AU2512799A (en) | 1999-09-15 |
DK25698A (en) | 1999-08-26 |
DK176382B1 (en) | 2007-10-22 |
EP1073386B1 (en) | 2003-11-19 |
DE69912940D1 (en) | 2003-12-24 |
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